摘要
论述了昆山市"十二五"期间各样点灌区灌溉水利用系数测算结果,对影响灌溉水利用系数的部分影响因素作了简要分析,并根据样点灌区记录的耗电量与毛灌溉水量数据建立了经验模型。结果表明,加大灌区资金投入可以明显提高灌区的灌溉水利用效率;稻季降雨量增加对应灌溉水利用效率呈增加趋势;灌区使用低压管道输水可以提高灌区的灌溉水利用效率;加强农业用水管理对持续保持较高灌溉水利用系数有重要意义。根据2014年历史数据建立的幂指数经验关系估算2015年的毛灌水量,经统计分析,结果表明二者达到显著相关,故可用幂指数经验关系估算灌区的农业用量。
Irrigation water use coefficient of irrigation districts in Kunshan during the 12 th Five-Year Plan period is discussed. Some factors influencing the utilization coefficient of irrigation water are analyzed. The empirical model was established based on the data of the power consumption and the irrigation water quantity recorded in the sample irrigation area. The results showed that the irrigation water use efficiency could be obviously improved by increasing the investment of irrigated area, increasing rainfall in rice season, using low-pressure piped transfer water in irrigated area. It is of great significance for continuously maintaining a higher irrigation water use factor by strengthening the agricultural water management. According to the historical data of 2014, the empiric relationship of power exponent is used to estimate the gross irrigation quantity in the year of 2015, and the statistical analysis shows that they have significant correlation. Therefore, the empiric relationship of power exponent can be used to estimate the agricultural use of the irrigation area.
出处
《江苏水利》
2017年第2期58-63,共6页
Jiangsu Water Resources
关键词
灌区
灌溉水利用系数
经验模型
低压管道
管理
irrigation area
irrigation water use coefficient
empirical model
low-pressure piped
management
